coupe s cutting out at speed (again)

dave432 · Post by **dave432** » Mon Oct 10, 2005 6:45 pm

was driving it normally and the engine cut out, slowed down pulled in and tried to start it. didnt start, waited a couple of minutes and tried again it started. it has happened today as well as yesterday at varying speeds. drove it home tonight, about 5-6 mile and it was ok.

has anyone got any ideas on what could be causing the problem?

polo-vixen · Post by **polo-vixen** » Tue Oct 11, 2005 2:11 pm

My problme is smilar to yours, so i had a new alternator and start motor put on the car and she is fine now!

So i dnt know if this is any help to you

Tahrey1043 · Post by **Tahrey1043** » Tue Oct 11, 2005 7:49 pm

number one suspect: carb icing

how far north are you? bit odd for it to be starting this early into the winter.. got a custom filter on or anything like that which cuts out the hot air feed? (is your HAF pipe & switch ok, if its still in place?)

polo-vixen · Post by **polo-vixen** » Tue Oct 11, 2005 10:12 pm

it would struggle to keep up revs if it was carb icing as i had that probelm before, and starting would not be a problem!

dave432 · Post by **dave432** » Wed Oct 12, 2005 12:21 am

the hot air feed was split so i sorted it out with some gaffa until i get time to go to get a new one.

dave432 · Post by **dave432** » Mon Oct 24, 2005 1:32 am

happened a couple of weeks ago just twice though, tonight i was driving and it started jolting as though i was bump starting it, then it rolled for a bit and kept doing this. it finally cut out on a hill so me and ben pushed it up the hill (took about 15 min) then managed to bump start it down the hill, since i had flattened the battery trying to start it. then i managed to drive it home about 5 mins and its been ok. what do you reckon this could be?

GroovyCarrot · Post by **GroovyCarrot** » Mon Oct 24, 2005 12:13 pm

Sounds a bit like the symptoms of engine flooding.. have you recently done anything to your carb? Check your spark plugs, if they're covered in black soot then it's overfuelling.

dave432 · Post by **dave432** » Tue Oct 25, 2005 8:09 pm

havent done anything to the carb, might check plugs tomorrow

dave432 · Post by **dave432** » Mon Oct 31, 2005 11:02 pm

checked plugs they look normal. at the side on the carb i noticed two pipes that go through this bit on the left of the carb, they felt quite pressurised, are they meant to be like this?

Tahrey1043 · Post by **Tahrey1043** » Thu Nov 03, 2005 10:14 pm

hm, my message disappeared.......

dont fiddle with those pipes, they're probably the fuel feed to the carb and might be under quite a bit of pressure (about a centimetre diameter, connected to some spherical brass things?). you HAVE to depressurise the fuel system before taking them off (and may still spill a bit anyway) - remove the fuel pump fuse, start and run the engine, and when it cuts out (completely) turn it on the starter with the pedal pressed right down for about fifteen seconds. should be safe then...

GroovyCarrot · Post by **GroovyCarrot** » Fri Nov 04, 2005 9:51 am

Mk2 fuel pumps are mechanical and pretty low pressure, so none of that jiggery pokery is necessary. If you want to remove the fuel lines they will just pull off, you'll probably spill a bit of fuel so have some water to hand to douse it down.

Those pipes will either be the fuel lines or vacuum pipes. If they're short rubber pipes joining two bits of the carb, or the carb to the distributor, then they're vacuum pipes. Shouldn't really be under pressure, exactly the opposite really.. The fuel lines are thicker, reinforced rubber hoses that lead from the carb underneath the car to the fuel tank. These should feel pretty solid.